US7642005B2 - Battery pack - Google Patents

Battery pack Download PDF

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Publication number
US7642005B2
US7642005B2 US10/923,749 US92374904A US7642005B2 US 7642005 B2 US7642005 B2 US 7642005B2 US 92374904 A US92374904 A US 92374904A US 7642005 B2 US7642005 B2 US 7642005B2
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US
United States
Prior art keywords
spacer
battery cells
case
battery
battery pack
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active, expires
Application number
US10/923,749
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English (en)
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US20050053829A1 (en
Inventor
Kyu-Nam Han
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Samsung SDI Co Ltd
Original Assignee
Samsung SDI Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Samsung SDI Co Ltd filed Critical Samsung SDI Co Ltd
Assigned to SAMSUNG SDI CO., LTD. reassignment SAMSUNG SDI CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HAN, KYU-NAM
Publication of US20050053829A1 publication Critical patent/US20050053829A1/en
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/213—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for cells having curved cross-section, e.g. round or elliptic
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6551—Surfaces specially adapted for heat dissipation or radiation, e.g. fins or coatings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
    • H01M10/643—Cylindrical cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6561—Gases
    • H01M10/6562—Gases with free flow by convection only
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/623—Portable devices, e.g. mobile telephones, cameras or pacemakers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M6/00—Primary cells; Manufacture thereof
    • H01M6/42—Grouping of primary cells into batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present invention relates to a battery pack and, more particularly, to a spacer placed between battery cells when making a battery pack.
  • the secondary battery may be recharged, and may be made into a battery pack and used as the power source for various portable electronic devices such as cellular phones, laptop computers, and camcorders.
  • the lithium secondary battery among the secondary batteries is more suitable for portable electronic devices since it has a high driving voltage and a high energy density per unit weight.
  • the lithium polymer battery is a type of lithium battery which uses polymer electrolytes, and has the advantage of making portable electronic devices slim and lightweight because it is flexible so as to form various shapes, and its weight is light.
  • the battery pack includes battery cells which are prepared separately, a case receiving the battery cells, and a spacer placed between the battery cells when a plurality of the battery cells are placed inside the case.
  • the spacer is placed between the battery cells to prevent electrical contact between the battery cells, and the spacer supports both sides of the battery cell when the battery cells are placed inside the case so that it plays a role in making the battery cells tightly fixed.
  • the spacer which has been suggested or used for the battery pack up to the present is devised so as to have a contact area with the battery cell which is as large as possible. This enables the spacer to support the battery cells by area contact so that more supporting power is added to the battery cells so as to fix the battery cells more tightly.
  • the spacer when the battery cell has a cylindrical shape, the spacer has a curved surface corresponding to the circumferential surface of the battery cells so as to contact the outer surface of the cylindrical battery cell.
  • a curved surface corresponding to the circumferential surface of the battery cells so as to contact the outer surface of the cylindrical battery cell.
  • the consumer who uses an electronic device having the secondary battery as the power source suffers inconvenience in using the electronic device because it cannot be sufficiently supported by the power source of the secondary battery.
  • a battery pack in which the heat generated from the battery cells easily flows out of the case, and in which the plurality of battery cells disposed inside the case are supported tightly when the battery pack is made.
  • the battery pack includes a case having an inner space, a plurality of battery cells disposed inside the case, and at least one spacer disposed between the battery cells, and a space is formed around a supporting portion of the spacer(s) for the battery cells to allow the heat generated by the battery cells to flow out of the case.
  • the battery pack includes a case having an inner space, a plurality of battery cells disposed inside the case, and at least one spacer disposed between the battery cells, wherein the spacer supports the battery cell by line contact with the battery cells.
  • the spacer includes a body having a supporting portion for contacting and supporting the battery cells, and the spacer can be formed such that the cross-section of the supporting portion of the spacer is perpendicular to the longitudinal direction of the battery cell when the spacer is mounted inside the case and has a staircase shape.
  • the body can be formed in the shape of an H beam.
  • FIG. 1 is an exploded perspective view of a battery pack according to an embodiment of the present invention
  • FIG. 2 is a perspective view of a spacer of the battery pack according to the embodiment of the present invention.
  • FIG. 3 is a partial sectional view of the battery pack according to the embodiment of the present invention.
  • FIG. 1 is an exploded perspective view of a battery pack according to an embodiment of the present invention.
  • the battery pack shown in the figure is a battery pack for laptop computers.
  • the present invention is not limited to the disclosed exemplary embodiment. That is, the present invention can be used as the battery pack for various other electronic devices.
  • the battery cell with a cylindrical shape is given below as an example, the present invention is not limited to the following example.
  • the battery pack according to the present invention includes a case 20 having an inner space 2 a of a predetermined size.
  • the case 20 has an upper case 2 b and a lower case 2 c, both of which are assembled into one body, and the case 20 receives a plurality of battery cells 22 inside the inner space 2 a when the upper case 2 b and the lower case 2 c are detached.
  • the case 20 has a rectangular shape, and a connector 2 d is formed on one of the upper case 2 b and the lower case 2 c (the lower case for the present embodiment) which electrically connects the battery pack with an electronic device, such as a laptop computer.
  • the battery cells 22 are secondary batteries prepared separately, for example, cylindrical lithium-ion secondary batteries, a plurality of which are placed in the inner space 2 a of the case 20 so as to electrically connect to each other and to connect to the connector 2 d. Since the structure for connecting these battery cells is the same as in the general battery packs, the detailed description for this structure is not provided herewith.
  • a spacer 24 which supports the battery cells 22 is mechanically placed between the battery cells 22 so that the battery cells 22 are mounted stably inside the case 20 .
  • the spacer 24 prevents electrical contact between each other of the battery cells.
  • the spacer 24 Since the spacer 24 supports the side corresponding to the longitudinal direction of the battery cells 22 , that is, the circumferential area of the battery cells 22 , when the battery cells 22 are received inside the case 20 , the spacer 24 has a body 24 a (see FIG. 2 ) which is formed with a long shape along the longitudinal direction of the battery cells 22 .
  • the spacer 24 has a structure to support the battery cells 22 by line contact therewith. Accordingly, the body 24 a of the spacer 24 has the shape of an H beam, and is formed such that the cross-section of a supporting portion 24 b contacts and supports the battery cells having a staircase shape ( FIG. 3 ).
  • the cross-section of the supporting portion 24 b is a cross-sectional view cut in the direction Y perpendicular to the longitudinal direction or longitudinal axis X of the battery cells 22 when the battery cells 22 are placed inside the case,
  • such a shape enables the spacer 24 to make a space 26 between the battery cells 22 and the supporting portion 24 b as the spacer 24 supports the battery cells 22 by line contact therewith inside the case 20 upon fabrication of the battery pack.
  • the space 26 is formed with a long shape between the battery cells 22 and the spacer 24 along the longitudinal direction of the battery cells 22 and the spacer 24 .
  • the space 26 serves as an air flow passage which allows the heat generated by the battery cells 22 to flow out of the case 22 when the battery pack is used as a power source for a laptop computer.
  • the spacer 24 can also have a structure wherein it supports the battery cells 22 by point contact as well as line contact.
  • the spacer 24 contacting and supporting the battery cells 22 provides a space 26 with respect to the battery cells 22 while supporting the battery cells 22 .
  • the battery pack of the present invention allows the heat to flow out of the case 20 through the space 24 so as to enable the battery cells 22 to work without heat damage.
  • the battery pack of the present invention can prevent the battery from decreasing its life and thereby consumers can use portable electronic devices for a long time.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Battery Mounting, Suspending (AREA)
  • Secondary Cells (AREA)
US10/923,749 2003-09-09 2004-08-24 Battery pack Active 2027-07-10 US7642005B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR2003-63137 2003-09-09
KR10-2003-0063137A KR100497252B1 (ko) 2003-09-09 2003-09-09 전지 팩

Publications (2)

Publication Number Publication Date
US20050053829A1 US20050053829A1 (en) 2005-03-10
US7642005B2 true US7642005B2 (en) 2010-01-05

Family

ID=34225477

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/923,749 Active 2027-07-10 US7642005B2 (en) 2003-09-09 2004-08-24 Battery pack

Country Status (4)

Country Link
US (1) US7642005B2 (ja)
JP (1) JP4484640B2 (ja)
KR (1) KR100497252B1 (ja)
CN (1) CN1324723C (ja)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130059186A1 (en) * 2010-01-29 2013-03-07 Kabushiki Kaisha Toshiba Electronic Apparatus and Battery Pack
US8546007B2 (en) 2009-10-29 2013-10-01 Samsung Sdi Co., Ltd. Rechargeable battery
US8815437B2 (en) 2009-09-10 2014-08-26 Samsung Sdi Co., Ltd. Rechargeable battery

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7967506B2 (en) 2005-03-16 2011-06-28 Ford Global Technologies, Llc Power supply temperature sensor and system
KR100930474B1 (ko) 2005-12-08 2009-12-09 주식회사 엘지화학 전지모듈 제조용 조립식 스페이서
KR100853620B1 (ko) * 2006-01-16 2008-08-25 주식회사 엘지화학 전지모듈 제조용 스페이서
CN101820053B (zh) * 2005-12-27 2012-12-19 株式会社Lg化学 电池组间隔件
WO2009040200A1 (de) * 2007-09-21 2009-04-02 Robert Bosch Gmbh Akkupack
JP5179140B2 (ja) * 2007-10-18 2013-04-10 マックス株式会社 電池パック
KR101057563B1 (ko) 2009-07-01 2011-08-17 삼성에스디아이 주식회사 배터리 팩
KR101071537B1 (ko) * 2009-09-17 2011-10-10 주식회사 엘지화학 신규한 구조의 방열부재를 포함하는 전지모듈 및 중대형 전지팩
KR101152443B1 (ko) 2010-07-12 2012-06-01 삼성에스디아이 주식회사 배터리 팩
US20120088142A1 (en) * 2010-09-24 2012-04-12 Yihsong Jan Connecting assembly for batteries and battery assembly
TWI371883B (en) * 2011-07-08 2012-09-01 Simplo Technology Company Ltd Battery module and related forming method,battery cell assembly,bus layout structure of a battery module and related layout method,cpnnection structure and connection method between battery cells and conductiog buses of a battery module, and connection s
US9356277B2 (en) 2012-01-31 2016-05-31 Samsung Sdi Co., Ltd. Battery pack including spacer receiving conductive member
KR20140021468A (ko) * 2012-08-10 2014-02-20 삼성에스디아이 주식회사 배터리 팩
CN103579548B (zh) * 2012-08-10 2018-09-18 三星Sdi株式会社 电池组
KR102307906B1 (ko) * 2014-10-01 2021-10-01 삼성에스디아이 주식회사 방열구조를 갖는 배터리 팩
US11358268B2 (en) 2017-09-27 2022-06-14 Globe (jiangsu) Co., Ltd. Battery compartment for power tools
CN115133193B (zh) * 2021-03-26 2024-07-12 米沃奇电动工具公司 电池单元分隔器
WO2023137595A1 (zh) * 2022-01-18 2023-07-27 珠海冠宇电池股份有限公司 电池

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5968167A (ja) 1982-10-12 1984-04-18 Matsushita Electric Works Ltd 電池式電気機器
JPH05251075A (ja) 1992-03-06 1993-09-28 Sony Corp バッテリーパック
JPH05290821A (ja) 1992-04-15 1993-11-05 Sony Corp ２次電池パックとその製造方法
JPH09219182A (ja) 1996-02-13 1997-08-19 Toyota Autom Loom Works Ltd 円筒型電池の保持構造体およびその方法
JPH10106520A (ja) 1996-09-26 1998-04-24 Matsushita Electric Ind Co Ltd 蓄電池電源装置
US5744260A (en) * 1996-07-25 1998-04-28 Daewoo Electronics Co., Ltd. Battery pack
JPH11127166A (ja) 1997-10-23 1999-05-11 Nec Corp パケットセル廃棄制御装置
JP2000100401A (ja) 1998-09-22 2000-04-07 Fuji Film Celltec Kk バッテリーパック
JP2004362879A (ja) 2003-06-03 2004-12-24 Toyota Motor Corp 集合電池
JP2006522995A (ja) 2003-01-03 2006-10-05 オヴォニック バッテリー カンパニー インコーポレイテッド 絶縁性管状ハウジングを有するバッテリー

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* Cited by examiner, † Cited by third party
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JPH0648745Y2 (ja) * 1988-02-24 1994-12-12 三洋電機株式会社 電池パック
JPH08106888A (ja) * 1994-09-30 1996-04-23 Kenwood Corp 組電池及び機器の電池ホルダーの構造
JPH10241646A (ja) * 1997-02-25 1998-09-11 Sanyo Electric Co Ltd パック電池
JP2001126689A (ja) * 1999-10-26 2001-05-11 Tookado:Kk 電池パックのスペーサ
JP3679705B2 (ja) * 2000-11-30 2005-08-03 三洋電機株式会社 電池パックとその製造方法

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5968167A (ja) 1982-10-12 1984-04-18 Matsushita Electric Works Ltd 電池式電気機器
JPH05251075A (ja) 1992-03-06 1993-09-28 Sony Corp バッテリーパック
JPH05290821A (ja) 1992-04-15 1993-11-05 Sony Corp ２次電池パックとその製造方法
JPH09219182A (ja) 1996-02-13 1997-08-19 Toyota Autom Loom Works Ltd 円筒型電池の保持構造体およびその方法
US5744260A (en) * 1996-07-25 1998-04-28 Daewoo Electronics Co., Ltd. Battery pack
JPH10106520A (ja) 1996-09-26 1998-04-24 Matsushita Electric Ind Co Ltd 蓄電池電源装置
JPH11127166A (ja) 1997-10-23 1999-05-11 Nec Corp パケットセル廃棄制御装置
JP2000100401A (ja) 1998-09-22 2000-04-07 Fuji Film Celltec Kk バッテリーパック
JP2006522995A (ja) 2003-01-03 2006-10-05 オヴォニック バッテリー カンパニー インコーポレイテッド 絶縁性管状ハウジングを有するバッテリー
JP2004362879A (ja) 2003-06-03 2004-12-24 Toyota Motor Corp 集合電池

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8815437B2 (en) 2009-09-10 2014-08-26 Samsung Sdi Co., Ltd. Rechargeable battery
US8546007B2 (en) 2009-10-29 2013-10-01 Samsung Sdi Co., Ltd. Rechargeable battery
US20130059186A1 (en) * 2010-01-29 2013-03-07 Kabushiki Kaisha Toshiba Electronic Apparatus and Battery Pack
US8748023B2 (en) * 2010-01-29 2014-06-10 Kabushiki Kaisha Toshiba Electronic apparatus and battery pack

Also Published As

Publication number Publication date
JP4484640B2 (ja) 2010-06-16
KR100497252B1 (ko) 2005-06-23
CN1324723C (zh) 2007-07-04
JP2005085767A (ja) 2005-03-31
KR20050026162A (ko) 2005-03-15
CN1595714A (zh) 2005-03-16
US20050053829A1 (en) 2005-03-10

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